I use vncviewer from package vnc version 4.1.2-r4 (latest Gentoo
stable) connecting to an MSXP machine and it crashes when I maximize
the window. From the shell:vncviewer: TXScrollbar.cxx:47: void
TXScrollbar::set(int, int, int, bool): Assertion `limit_ > 0
&& len_ >= 0 && len_ <= limit_' failed.
I experienced many problems with this package like that when vncviewer
to an MS machine it sometimes got it's network hang for a few minutes
(didn't respond to ping. seem to me that rapid graphics update was
performed when it hanged) but I don't even know on which side are the
problems.